| Illingen to Obernburg am Main | 98.86 mi (159.09 km) |
| Illingen to Obernkirchen | 219.06 mi (352.55 km) |
| Illingen to Oberschleissheim | 219.60 mi (353.41 km) |
| Illingen to Oberstdorf | 200.91 mi (323.34 km) |
| Illingen to Obertraubling | 232.72 mi (374.53 km) |
| Illingen to Obertshausen | 92.75 mi (149.26 km) |
| Illingen to Oberursel | 88.81 mi (142.93 km) |
| Illingen to Ochsenfurt | 136.52 mi (219.71 km) |
| Illingen to Ochsenhausen | 159.79 mi (257.16 km) |
| Illingen to Ochtrup | 195.57 mi (314.74 km) |
| Illingen to Odenthal | 114.52 mi (184.30 km) |
| Illingen to Oelde | 176.44 mi (283.95 km) |
| Illingen to Oelsnitz | 238.64 mi (384.06 km) |
| Illingen to Oer-Erkenschwick | 156.79 mi (252.34 km) |
| Illingen to Oerlinghausen | 192.41 mi (309.66 km) |
